Things You'll Need
Instructions
Turn off the Xbox 360 console.
Plug the adapter's USB power cord into the Xbox 360's USB port, located on the back of the console above the Ethernet port.
Disconnect any Ethernet cable from the console if applicable.
Latch the adapter to the console by plugging the adapter's two flaps into the two holes just above the USB port you plugged the adapter into.
Power on the Xbox 360 console and press the "Guide" button on the controller to open a menu.
Scroll to the "Settings" tab then choose "System Settings" from the menu.
Choose "Network Settings." This opens a new menu where you can view and edit your console's network connections.
Select "Configure Network." This menu allows you to view your wireless connections, among numerous other things.
Choose "Wireless Mode." You will have two options: "Windows Connect Now," which connects the console to a Windows-based computer, or "Scan for Networks," which is what you want.
Choose "Scan for Networks." The adapter searches for available wireless networks for a few seconds. It will deliver a results list upon search completion.
Choose your wireless Internet connection from the list and enter its password.